Re: [PATCH 3/3] PM: Limit race conditions between runtime PM and system sleep

[Ming Lei <tom.leiming@gmail.com>]

Hi Rafael,

On Sun, 26 Jun 2011 00:56:31 +0200
"Rafael J. Wysocki" <rjw@sisk.pl> wrote:

> Index: linux-2.6/Documentation/power/runtime_pm.txt
> ===================================================================
> --- linux-2.6.orig/Documentation/power/runtime_pm.txt
> +++ linux-2.6/Documentation/power/runtime_pm.txt
> @@ -567,6 +567,11 @@ this is:
>  	pm_runtime_set_active(dev);
>  	pm_runtime_enable(dev);
>  
> +The PM core always increments the run-time usage counter before calling the
> +->suspend() callback and decrements it after calling the ->resume() callback.
> +Hence disabling run-time PM temporarily like this will not cause any run-time
> +suspend callbacks to be lost.

Could you explain why the above is that "this will not cause any run-time suspend
callbacks to be lost"? 

Looks like it should be "this will not cause any run-time suspend callbacks to
be called", but not sure.


thanks,
-- 
Ming Lei